private void BackButton_Click(object sender, RoutedEventArgs e)
{
//string path = System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "Saved Budgets");
string path = System.IO.Path.Combine((Environment.CurrentDirectory), "Saved Budgets");
string fullPath = System.IO.Path.Combine(path, openFileName);
trySave(fullPath);
saveToDb();
StartWindow sw = new StartWindow();
sw.Show();
this.Close();
}